MULE DEER BEHAVIOR IN RELATION TO FENCING AND UNDERPASSES ON INTERSTATE 80 IN WYOMING

摘要: Where Interstate 80 crosses the migration route of approximately 1000 mule deer (Odocoileus hemionus), there were 37-60 vehicle accidents involving each year from 1973 to 1976. A 7.8-mile section right-of-way fence was replaced with an 8-ft-high big-game in October 1978 force use three machinery and four box-type underpasses area. During periods immediately following installation fence, more than 4000 went through these underpasses, as recorded by track counts surveillance cameras. About 70 percent used move their winter range; others passed concrete underpasses. spring migrations, 90 two at east, or higher end, Baiting alfalfa hay, fresh vegetable trimmings, apple pulp helped lure first time. There only one deer-vehicle accident inside fenced area during years after completed. In addition, killed above (east of) end highway a few below (west where had been common before constructed. The major difficulties associated fencing (a) selection proper for (an additional mile built discourage going around ends), (b) inadequacy guards on ramps interchange, (c) need continuous monitoring holes fence. (Author)